Non‐Marine Sources Contribute to Aerosol Methanesulfonate Over Coastal Seas

Abstract

Marine biogenic sources contribute substantially to atmospheric gaseous and particulate components and exert significantly environmental and climatic effects (Carpenter et al., 2012;O'Dowd et al., 2004). Ocean organism-derived dimethyl sulfide (DMS) is the largest natural source of sulfur-containing gases emitted to the atmosphere (Watts, 2000), which can be oxidized and transformed into sulfate aerosols and thereby impact the cloud condensation nuclei (CCN) and downward radiation over the ocean (Barnes et al., 2006;Charlson et al., 1987). A part of DMS will be oxidized to form methanesulfonic acid/methanesulfonate (MSA) by both gaseous and aqueous phase reactions in the atmosphere (Barnes et al., 2006;Hoffmann et al., 2016). MSA is one of the most abundant secondary organic aerosol (SOA) components in marine environment, and its ratio to non-sea-salt SO 4 2− (nss-SO 4 2-) ranges from less than 10 −2 to near 1 (Bates

Ocean Emission Pathway and Secondary Formation Mechanism of Aminiums Over the Chinese Marginal Sea

“…MSA has been demonstrated as a good tracer for marine biogenic sources (Savoie et al., 2002; Zhou et al., 2021). To eliminate the influence from the varying meteorological conditions among different periods, the mass ratios of aminiums in PM 2.5 and MSA in PM 2.5 were used for the following analysis.…”

“…Hence, the air masses with larger R O values were influenced more by marine emissions. More details about this method can be found in Zhou et al (2021).…”

“…𝐴𝐴 𝐴𝐴 −𝑡𝑡 𝑖𝑖 ∕72 is the aforementioned weighting factor. More details can be found in Zhou et al (2021).…”

“…MSA has been demonstrated as a good tracer for marine biogenic sources (Savoie et al, 2002;Zhou et al, 2021).…”

Importance of Atmospheric Transport on Methanesulfonic Acid (MSA) Concentrations in the Arctic Ocean During Summer Under Global Warming

“…Among them, MSA not only plays a role in promoting particle growth but may also play a role in promoting NPF (Bork et al., 2014; Ning et al., 2020; Zhao et al., 2017). Although, cooking is found to be an MSA source in a rural site (Dall'Osto et al., 2015) and non‐marine sources can contribute to MSA in coast in winter (Zhou et al., 2021), MSA in the marine atmosphere is a good indicator of biogenic aerosols in summer. Therefore, comprehensively understanding the spatial and temporal distribution characteristics of MSA particles in the Arctic Ocean and their major influencing factors is crucial.…”